City Requesting Engineered load calcs.

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CaneCorso

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Location
Michigan
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Electrical Contractor
Hi guys,

I have existing apartments buildings that need the services repaired/replaced. What seems to have happened here is existing 60a panels have been upgraded to 100a. This was done without a permit and before the new owner owned the building. The city is aware of this and wants an electrician to repair.

These apartments are not typical as far as the service goes. The meters are in groups of 2 with occasionally a 3rd house meter. 1 building will have 3-4 separate groups of 2 meters. Each group of 2 with its own overhead cable riser. Currently it is #2 SEU up from the meter, #6 SEU down to the panel and the meters are double tapped and other violations. This is one of the buildings...
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Originally the city wanted a load calculation and line drawing. I spoke with them, said I would do this and come in early the following week to touch base and submit.

I do the load calculations, it comes to 42A per unit, but some units have had 240v ranges added in the past so this brings it to 59A per unit. Each service only servers 2 units, bringing us to a calculated load of 118A for 2 units. On the line drawing I draw it up as 2/0 SEU coming up out of a duplex meter bank (or trough depending on availability), then #2 SEU down to each panel.

When I come to submit this the inspector does not want to look at any of it because they have changed their minds and want an engineer to do it. I initially agree as I want to appease the city and how hard could it be?

Well it seems it is kind of hard. I try to find an engineer using Google, contacting other master electricians, other electrical companies, other municipalities, other electrical inspectors and even the electrical inspector requesting this and having no luck, not even the slightest lead. Everyone seems to be saying this is our job, even one inspector saying this inspector is being lazy.

I emailed the electrical inspector and building director with my dilemma and no response. I called and left a message with the Director, no response.

My questions are:
Do you know anyone who can do a load calculation & line drawing for these apartments that we can hire to satisfy the city?
What do you think of this cities decision to require this on an essentially 2 panel service?
Should I push the city on this, sticking with the fact this is on our master's test and shouldn't be the issue they are making it?
Should I submit a freedom of information act request to see how many times they have requested this previously in the last 5yrs? LOL

Thank you for any help and ideas!

Ps. This is the City of Roseville, MI.. Electrical Inspector Larry Roberts and building Director James Osterhout.
 
IMO they would need a codified law stating when load calculations need to be performed by an engineer, they can't just pull it out of the luminiferous ether. If you don't get response or useful information I would just keep climbing the food chain, go to the city council if you have to.
 
Might be cheaper and faster to just offer to over build the service entrance. Show them your calcs and go up substantially on the service drop. I would think they won't complain and say they need a (perceived) more precise calculation.
 
They don't want to sign off on the calculations. They don't trust themselves to review them, and don't want their butts on the line. One thing you might be able to do is work with utility, show them the calcs for the services you need, come up with a plan, and get utility to approve it. Then you can take that approval to the city.

Due to there being two to three meters on a service, there is absolutely no need to require an EE to do these.
 
Spoke with the inspector this morning. He is citing:

NEC annex h 80.13.12 &
Michigan part 8 rules. 80.21

I have not looked into the above, but will be free this evening to do so.

I did ask for info on previous electrical contractors who have had to complete this requirement. He had the info for an architect who he remembered did the drawings. I left a message with that company and hopefully we can work with them and resolve this.
 
Spoke with the inspector this morning. He is citing:

NEC annex h 80.13.12 &
Michigan part 8 rules. 80.21

I have not looked into the above, but will be free this evening to do so.

I did ask for info on previous electrical contractors who have had to complete this requirement. He had the info for an architect who he remembered did the drawings. I left a message with that company and hopefully we can work with them and resolve this.
I do not see anything whatsoever in those references requiring PE involvement.
 
I do not see anything whatsoever in those references requiring PE involvement.
What a flat-out lazy cite. Annex H does not at all require a PE. You are correct there. I just read those rules and this doesn't seem to meet their requirements, as there is an AND, in addition to each individual service feeder being less than 400A.


It's up to you if you want to shut down this inspector. Earns some ill will, but will keep them from pulling this crap in the future.
 
What a flat-out lazy cite. Annex H does not at all require a PE. You are correct there. I just read those rules and this doesn't seem to meet their requirements, as there is an AND, in addition to each individual service feeder being less than 400A.


It's up to you if you want to shut down this inspector. Earns some ill will, but will keep them from pulling this crap in the future.
Even if plans and drawings are required, I see nothing requiring that they be drawn and stamped by a PE.
 
Just below Annex H title:

Informative Annex H is not a part of the requirements of this NFPA document and is included for informational purposes only. Informative Annex H is intended to provide a template and sample language for local jurisdictions adopting the National Electrical Code®.
From what I can tell, Michigan pretty much adopts the 2017 NEC directly. While Michigan Electrical Code, Part 8 rule 80.21 mentions several items that may be required by plans and specs, none of them appear to require any form engineering origination. The State's Engineering Statutes may require engineering certification on certain documents. As a PE myself, I would love to see more hard sealing requirements, but I can't find it in the Michigan Codes or Licensing Laws.

In some jurisdictions, "Engineer" just meant "Someone with a slide rule." With the introduction of calculators, even that distinction has disappeared.

BTW all NEC Annexes are for informational purposes only; that is, they are not directly enforceable without a declared local adoption.
 
I don't know how things are done in your town but here, we do the enginering and load calcs because we know the job then hand it to the engineer to stamp.
 
I don't know how things are done in your town but here, we do the enginering and load calcs because we know the job then hand it to the engineer to stamp.
A PE should not be stamping things they were not involved in preparing. They need to be an integral part of any decisions or assumptions.
 
I do the load calculations, it comes to 42A per unit, but some units have had 240v ranges added in the past so this brings it to 59A per unit.
How many square feet are the dwelling units? What are the appliance loads?
Each service only servers 2 units, bringing us to a calculated load of 118A for 2 units.
Which calculation did you use ? 220.85 or the General 220.40?
On the line drawing I draw it up as 2/0 SEU coming up out of a duplex meter bank (or trough depending on availability), then #2 SEU down to each panel.

When I come to submit this the inspector does not want to look at any of it because they have changed their minds and want an engineer to do it. I initially agree as I want to appease the city and how hard could it be?

Well it seems it is kind of hard. I try to find an engineer using Google, contacting other master electricians, other electrical companies, other municipalities, other electrical inspectors and even the electrical inspector requesting this and having no luck, not even the slightest lead.
I think a few of the forum members here are engineers in Michigan perhaps one of them can help.
But as others have said even if the building is over 3500 SQFT and they add up all the services to be over 400A it does not seem to require a PE, just plans.
 
As Bob points out I post #10, unless specifically adopted, article 80 which is annex H is not part of the code and the inspector is uniformed if he is trying to inforce nothing more than useless commentary.
 
ok good to know...but even if officially adopted, I didnt see anything in there that requires drawings by an engineer - but I only did a quick scan. Do you agree?
Yeah I agree, with what we know the OP should be able to submit his own calcs.
Here though if you get caught working without permits / licenses AKA 'code enforcement' there are bunch of hoops they make me jump thru.
 
A PE should not be stamping things they were not involved in preparing. They need to be an integral part of any decisions or assumptions.
How would A PE stamp things at all? They do not have the ability to do that. What I refer to is we are on the job and working with the client so we make sketch for final approval to be stamped.
 
How would A PE stamp things at all? They do not have the ability to do that. What I refer to is we are on the job and working with the client so we make sketch for final approval to be stamped.
If the engineer was not involved with the preparation of the drawings, they should not be stamping them. Yes they can just be a supervisor, but they need to be setting the rules and requirements.
PEs are not allowed to simply review and stamp other people's work product.

Maybe I am confused by your final sentence. Who are you referring will be doing the stamping.
 
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